Have you had a chance to check out the savegame?
In the two weeks since I sent it, I got around the problem simply by moving the household to a different property — the treehouse property at 404 Huckleberry Lane. The social jigs seem to become visible when I switch to another household and then switch back, so I simply never switched to any other household.
That worked until yesterday, when I split up the household and switched to the offshoot family for a couple sim days; when I switched back to the household at 404 Huckleberry Lane, I found two social jigs in the kitchen that weren't there before.
I expect I'll have to switch a lot between the main household and the offshoot one in the near future, though I'm afraid to since, the more I switch, the more social jigs accumulate on the properties until they become unlivable.